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  <script>
    /* 
      Promise.reject:
        - 默认返回一个失败的promise实例,值是reject接受的实参(无论这个实参是不是promise实例),快速把一个值包装成promise实例
    
    */
   const re = Promise.reject(2)
   console.log('re',re);
   const re1 = Promise.reject(new Promise((resolve,reject)=>{
    resolve(2)
    // reject('err')

   }))
    // const result = Promise.reject(1);
    // console.log("result", result);


    // const result2 = Promise.reject(new Promise((resolve, reject) => {
    //   // resolve(1)
    //   reject("err")
    // }));
    // console.log("result2", result2);
  </script>
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